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| author | Aleksa Savic <savicaleksa83@gmail.com> | 2023-12-19 15:36:19 +0100 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2024-01-08 07:27:27 -0800 |
| commit | 41c71105a845ec1458680f01644d032a5fbbe0d9 (patch) | |
| tree | a69c3f76e872575345f3f95b6187db4f3247bb5a | |
| parent | 8249a0e25dd2972e919a2552425bf4faa2581d24 (diff) | |
| download | linux-41c71105a845ec1458680f01644d032a5fbbe0d9.tar.gz linux-41c71105a845ec1458680f01644d032a5fbbe0d9.tar.bz2 linux-41c71105a845ec1458680f01644d032a5fbbe0d9.zip | |
hwmon: (gigabyte_waterforce) Mark status report as received under a spinlock
Through hidraw, userspace can cause a status report to be sent
from the device. The parsing in waterforce_raw_event() may happen in
parallel to a waterforce_get_status() call (which resets the completion
for tracking the report) if it's running on a different CPU where
bottom half interrupts are not disabled.
Add a spinlock around the complete_all() call in waterforce_raw_event()
to prevent race issues.
Fixes: d5939a793693 ("hwmon: Add driver for Gigabyte AORUS Waterforce AIO coolers")
Signed-off-by: Aleksa Savic <savicaleksa83@gmail.com>
Link: https://lore.kernel.org/r/20231219143620.22179-1-savicaleksa83@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| -rw-r--r-- | drivers/hwmon/gigabyte_waterforce.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/hwmon/gigabyte_waterforce.c b/drivers/hwmon/gigabyte_waterforce.c index 1799377fc2f1..85e523775714 100644 --- a/drivers/hwmon/gigabyte_waterforce.c +++ b/drivers/hwmon/gigabyte_waterforce.c @@ -276,8 +276,10 @@ static int waterforce_raw_event(struct hid_device *hdev, struct hid_report *repo priv->duty_input[0] = data[WATERFORCE_FAN_DUTY]; priv->duty_input[1] = data[WATERFORCE_PUMP_DUTY]; + spin_lock(&priv->status_report_request_lock); if (!completion_done(&priv->status_report_received)) complete_all(&priv->status_report_received); + spin_unlock(&priv->status_report_request_lock); priv->updated = jiffies; |